If I have the time and cba, I'll brown the meat - but normally I don't (there's always something more important to do). It makes no difference whatsoever to the taste ime. I don't sweat/soften the onions or other veg either.
My normal recipe - braising steak, onion, carrot, mushrooms, cover with water, into the oven for a couple of hours then thicken the gravy. Three minutes prep time max. Serve with potatoes (or on slices of bread if you're really pushed for time!!).
For a more sophisticated taste - lamb pieces, tin of tomatoes, carrot, caraway seeds, and enough water to cover, into the oven for a couple of hours, then thicken the gravy.
And even quicker - pork chops, onion, small tin of pineapple chunks, into the oven for about an hour. Serve with pasta. No need to thicken any gravy - spoon the juice over the pasta.